I found a bug, how can I report it ?

If you're confident that you're not misusing the software (read the doc) and it's not an already reported bug,
you can create a new ticket containing the following details :

a short description as title

in ticket body, put your affected version number (if you use a development version, please send the git revision)

a full description of your bug

a way to to reproduce the bug

attach any relevant files (examples, logs...)

the plaftorm, eg linux x86_64

Without a login you will not be able to modify the ticket afterward. To be able to modify the ticket, send a login request at developers@….

I have a patch to submit

If possible, you can submit patches for review on GitHub at ​https://github.com/openturns/openturns
The only constraint for submitting patches is to provide it under "GNU LGPL" compliant licence.
If it is not explicitly specified, your patches will be considered licenced under the terms of "GNU LGPL".
All contributions help.